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Partial researchResearch snapshot 2026-09-13. Evidence gaps remain; see Coverage for requirements.

Office briefing

SAN FRANCISCO DE LOS ROMO — Municipal government

Tracked current office. Identifiers stay separate from display names.

Mexico · SAN FRANCISCO DE LOS ROMO / AGUASCALIENTES · municipal · Municipal governmentMX-M-1-10

Read the complete original research briefing

INE result distributions kept separate. Certified seats, supplementary elections, coalition and boundary audit remain.

1. What office, where, and when is the next election?

Geography
SAN FRANCISCO DE LOS ROMO / AGUASCALIENTES
Next election
2027-06-06
Linked upcoming event
next-32a96baf2df739ea6e7a12cf
Registry qualification
Unknown

2. How certain is that date?

2027-06-06 is expected (not formally called). Day precision. A date without a formal call is not confirmed.

3. Who won earlier selected elections?

2024

Special · Legal certification not established · candidate marks

  • PAN_PRI_PRD47.6%
  • MORENA40.8%
  • MC4.4%
  • PVEM1.9%
  • PT1.4%
Results for event-bdda600e315db65e41bede15
Label / candidateParty codeVotesShareSeatsStatus
PAN_PRI_PRDmexico/Sb954fb4353/202412,54347.6%UnknownRecorded
MORENAmexico/Sb954fb4353/202410,76740.8%UnknownRecorded
MCmexico/Sb954fb4353/20241,1504.4%UnknownRecorded
PVEMmexico/Sb954fb4353/20244881.9%UnknownRecorded
PTmexico/Sb954fb4353/20243771.4%UnknownRecorded

2021

Special · Legal certification not established · candidate marks

  • PRI38.7%
  • PAN_PRD31.6%
  • PT_MORENA_PANALA21.3%
  • PLA1.7%
  • PVEM1.4%
  • MC0.9%
  • PES0.8%
  • RSP0.5%
  • FXM0.5%
Results for event-38344b84ba2d0006a36ac06f
Label / candidateParty codeVotesShareSeatsStatus
PRImexico/S226ce9861d/20217,35638.7%UnknownRecorded
PAN_PRDmexico/S226ce9861d/20216,00231.6%UnknownRecorded
PT_MORENA_PANALAmexico/S226ce9861d/20214,04321.3%UnknownRecorded
PLAmexico/S226ce9861d/20213241.7%UnknownRecorded
PVEMmexico/S226ce9861d/20212681.4%UnknownRecorded
MCmexico/S226ce9861d/20211620.9%UnknownRecorded
PESmexico/S226ce9861d/20211590.8%UnknownRecorded
RSPmexico/S226ce9861d/2021990.5%UnknownRecorded
FXMmexico/S226ce9861d/2021890.5%UnknownRecorded

2019

Special · Legal certification not established · candidate marks

  • PRI32.7%
  • MORENA25.7%
  • PAN18.6%
  • PT11.5%
  • PANALA3.0%
  • PVEM1.5%
  • MC1.1%
  • PRD1.0%
  • PLA0.7%
  • UPM0.5%
Results for event-d0fc892de2fe10c4986598aa
Label / candidateParty codeVotesShareSeatsStatus
PRImexico/Sb61bda94fd/20194,55532.7%UnknownRecorded
MORENAmexico/Sb61bda94fd/20193,57725.7%UnknownRecorded
PANmexico/Sb61bda94fd/20192,59218.6%UnknownRecorded
PTmexico/Sb61bda94fd/20191,60611.5%UnknownRecorded
PANALAmexico/Sb61bda94fd/20194123%UnknownRecorded
PVEMmexico/Sb61bda94fd/20192111.5%UnknownRecorded
MCmexico/Sb61bda94fd/20191561.1%UnknownRecorded
PRDmexico/Sb61bda94fd/20191451%UnknownRecorded
PLAmexico/Sb61bda94fd/20191020.7%UnknownRecorded
UPMmexico/Sb61bda94fd/2019650.5%UnknownRecorded

4. Competition and volatility

competition index

Provisional imported-series CI

64.340–100 historical closeness

Actual-event and/or comparability review incomplete

Comparison status: Provisional imported-series comparison; actual-event review open

Method ci.weighted-gap.v1. Inputs: latest_gap=7.012833168805528, oldest_gap=7.287087400342742, previous_gap=7.318127769970815

pedersen volatility

Provisional volatility

48.15percentage points

Grouped Pedersen lower bound (percentage points). Seven exact standalone INE party labels. Joint coalition combinations, independents and other parties remain Other, without allocating coalition votes. This coarse grouped comparison can conceal coalition-member shifts and requires the stated geographic/event review. An interval is withheld if either election has no list mapped to an explicit named group. This is aggregate share change, not individual voter switching. Event review: Actual-event and/or comparability review incomplete

Comparison status: Latest interval

Method pedersen.grouped.v1. Inputs: groups=["PAN","PRI","PRD","PT","PVEM","MC","MORENA","Other"], interval=Latest interval, vectors=[[0,0,0,1.4886475814412636,1.9269496544916092,4.54096742349457,42.515301085883515,49.52813425468904],[0,39.75786401470111,0,0,1.4484920549129823,0.8755810182682954,0,57.918062912117605],[19.31301691379182,33.939348781759925,1.0803963937113479,11.966321436554653,1.5721630280903063,1.1623574994411743,26.652261381417183,4.314134565233589]]

pedersen volatility

Provisional volatility

59.42percentage points

Grouped Pedersen lower bound (percentage points). Seven exact standalone INE party labels. Joint coalition combinations, independents and other parties remain Other, without allocating coalition votes. This coarse grouped comparison can conceal coalition-member shifts and requires the stated geographic/event review. An interval is withheld if either election has no list mapped to an explicit named group. This is aggregate share change, not individual voter switching. Event review: Actual-event and/or comparability review incomplete

Comparison status: Previous interval

Method pedersen.grouped.v1. Inputs: groups=["PAN","PRI","PRD","PT","PVEM","MC","MORENA","Other"], interval=Previous interval, vectors=[[0,0,0,1.4886475814412636,1.9269496544916092,4.54096742349457,42.515301085883515,49.52813425468904],[0,39.75786401470111,0,0,1.4484920549129823,0.8755810182682954,0,57.918062912117605],[19.31301691379182,33.939348781759925,1.0803963937113479,11.966321436554653,1.5721630280903063,1.1623574994411743,26.652261381417183,4.314134565233589]]

pedersen volatility

Provisional volatility

53.79percentage points

Grouped Pedersen lower bound (percentage points). Seven exact standalone INE party labels. Joint coalition combinations, independents and other parties remain Other, without allocating coalition votes. This coarse grouped comparison can conceal coalition-member shifts and requires the stated geographic/event review. An interval is withheld if either election has no list mapped to an explicit named group. This is aggregate share change, not individual voter switching. Event review: Actual-event and/or comparability review incomplete

Comparison status: Both intervals mean

Method pedersen.grouped.v1. Inputs: groups=["PAN","PRI","PRD","PT","PVEM","MC","MORENA","Other"], interval=Both intervals mean, vectors=[[0,0,0,1.4886475814412636,1.9269496544916092,4.54096742349457,42.515301085883515,49.52813425468904],[0,39.75786401470111,0,0,1.4484920549129823,0.8755810182682954,0,57.918062912117605],[19.31301691379182,33.939348781759925,1.0803963937113479,11.966321436554653,1.5721630280903063,1.1623574994411743,26.652261381417183,4.314134565233589]]

Source-reported control: Unverified. Current tenure requires separate dated evidence.

5. Officeholder evidence

Dated roster observations are not automatically current tenure. The source current-office flag means this office is tracked now, not that the last winner still holds it.

No officeholder observation supplied.

6. Polling context

No local poll supplied.

7. Unresolved issues and sources

No open research issues attached to this office.

Sources

Cite this record

Center for Digital Democracy. “SAN FRANCISCO DE LOS ROMO — Municipal government.” Subnational Election Observatory, releaselatin-america-fe5e91689def, snapshot 2026-09-13. /electiondatabase/offices/MX-M-1-10. Sources: mexico--url-3635e08ffbefd711526cbeea, mexico--Sb954fb4353, mexico--S226ce9861d, mexico--Sb61bda94fd.